The parents of the teen shot and killed by an officer during an undercover drug operation said Wednesday that the dashcam video of the shooting shows "an overly aggressive and poorly trained officer who violated every known police protocol in escalating a simple stop into a deadly shooting."

Angie and Paul Hammond released a statement through their attorneys in response to the release of the dashcam video and the decision by 10th Judicial Circuit Solicitor Chrissy Adams not to file charges against the officer involved in the shooting.

The video showing Lt. Mark Tiller shoot 19-year-old Zach Hammond in July was released Tuesday. (Video below on this page.)

The shooting happened at about 8:20 p.m. July 26 in the parking lot of Hardee's on Bypass 123 in Seneca during an undercover drug sting that targeted Tori Diana Morton, 23, who was a passenger in Hammond’s car.

The statement said, "While the family must accept Ms. Adams’ decision, they disagree completely with the conclusions she has expressed publicly. "

To read the full statement the parents made through their attorneys, click here.

The State Law Enforcement Division released the letter Adams sent them explaining her decision not to file charges. (Full text of letter)

In the letter, Adams said Morton accidentally texted a state trooper who had a very similar number to the person she was trying to sell drugs to.

The exchange goes as follows:

Morton (from Hammond's Cell): hey this tori I gotta g (gram) for 60 of the good (street language for cocaine)Trooper: Can i meet you in a little bitMorton (from Hammond's Cell): yeah whenever

The trooper called Seneca police, who sent an undercover officer to Hardee's to meet with Morton and Hammond.

This was the exchange between the officer and Morton around 8:25 p.m:

Officer: I'm in the back where you atMorton (from Hammond's Cell): I think im beside u lol

Tiller was sent to Hardee's for backup.

WYFF News 4 has obtained the dashcam video from the State Law Enforcement Division of what happened in the Hardee's parking lot.

To watch the dashcam video of the shooting, click here. | To watch a second dashcam video from a different patrol car, click here.

In the letter, Adams also gave her interpretation of what she said is shown in the video. “The dashcam video shows Lt. Tiller pulling his vehicle behind Hammond’s parked car. "Hammond can be seen on video subsequently putting his car in reverse. "Hammond is able to reverse and maneuver his vehicle between Tiller’s patrol car and (Seneca police Sgt. B.J.) McClure’s car. Tiller quickly approaches Hammond’s car on the driver’s side with his gun drawn and repeatedly orders Hammond to stop and to show his hands. "Hammond then puts his car in drive in order to attempt to flee the scene. Hammond ignores Lt. Tiller’s clear instructions to stop and show his hands. Hammond then puts his car in drive in order to attempt to flee the scene. Hammond then turns the car hard left toward Lt. Tiller resulting in Lt. Tiller being face-to-face with Hammond at the driver’s window. The dashcam video shows Hammond’s vehicle veering toward Lt. Tiller and accelerating rapidly. Tiller back pedals a few steps to avoid being knocked down by Hammond’s car and is seen pushing off the vehicle as it veers towards him. The dashcam video shows Tiller’s feet going underneath the car at the approximate time the shots are fired. This can also be seen in the still photos provided by the FBI lab. Two shots are fired in rapid succession. The first shot can be heard almost immediately after Tiller pushes off the car and when his body is still exposed to danger from the vehicle. "The second shot immediately follows. "The car accelerated with such force that a concrete curb was damaged as well as Hammond’s front passenger-side tire. "Tiller is heard on the dashcam video seconds after the shooting saying Hammond tried to hit him with the car. "The situation rapidly unfolded and, as evidenced by the dash cam video, Tiller was forced to decide whether or not to fire his weapon in less than three seconds.”

Adams wrote, “The video viewed at full speed, standing alone, is troublesome. However, when the video and the totality of the investigation is evaluated and the laws of our State are applied, it is clear that Lt. Tiller broke no State laws. "The evidence from this investigation corroborates and supports Lt. Tiller’s belief that he was going to be run over. "Therefore, the only conclusion that can be rendered is that deadly force was justified.”

Cellphone records released

In the letter, Adams laid out what she said is Hammond’s background of drug involvement based largely on cellphone records later acquired.

This was an exchange between Hammond and his mother, Angie, on July 18.

Angie Hammond: Dang. How much (did) you have on you?Zach Hammond: under a ounce but I (have) scales (and) I just (didn't) show up (and) I ran that checkpoint trust me the (police) is on meAngie Hammond: Talk about being a prisoner in your own home...Can you even drive your car? Im sure they know it...Zach Hammond: they do but I still drive so paranoid (and) I promise if I ever get blue lighted I will not stop lol ive escaped twice (already)Angie Hammond: Uh oh. 3 strikes and youre out. Please be careful

Adams said text messages also show Hammond had threatened an ex-girlfriend several months prior to the shooting.

Adams also said Hammond had cocaine and a drug used to cut cocaine in his system that he had used it within 3 to 6 hours of the shooting, and was under the influence of the drug at the time of the shooting. She said the coroner also found cocaine in Hammond’s pocket after the teen’s death.

Zach's parents, attorneys respond on Tuesday

Hammond's parents, Angie and Paul Hammond, and their attorneys spoke after meeting with Adams on Tuesday morning.

WYFF News 4's Mandy Gaither asked Angie Hammond how she felt about the decision. "I'm very disappointed. It's hard to understand." she said.

"There are a lot of questions and very sorry police work, very sorry police work," Paul Hammond said. "That is not the way things should be handled. My son lost his life and he should not have."

Attorneys Eric Bland and Ronnie Richter said Adams shared with them her investigation and her decision-making process.

Bland said they disagree with Adams decision but respect it. He described Adams as "very forthcoming."

Bland said the Hammonds saw the dashcam video. "It is a very, very difficult time for this family because they saw their son getting shot," Bland said.

Richter called the investigation "very thorough."

To listen to the entire interview with the attorneys and the Hammonds, click here.

About an hour after the announcement that Tiller would not be charged, Seneca City Administrator Greg Dieterrick released this statement:

"The past three months have been extremely difficult for the residents of Seneca, its city employees and the 45 members of its police force. While the effects of outside agitators to tear apart our community lingers, we are thankful the investigation has come to an end and shows Lt. Tiller was acting in self-defense. The night of July 26 was a tragic event for this community and I personally will always grieve for the Hammond family. I would like to thank the hard work of the local and state investigators who handled the cases expertly and professionally. I would like to thank Solicitor Adams, who suffered numerous personal attacks, for her diligence. I thank Chief John Covington for his courage and strength during these trying times as he and his family have been repeatedly maligned. "I thank our Mayor and City Council for standing with us during this tragedy. It is now time to start healing Seneca."

Lt. Tiller's attorney responds

Lt. Tiller's attorney John Mussetto, released a statement Tuesday afternoon. "Lt. Tiller agrees with the outcome of the investigation. As stated from day one, Lt. Tiller acted in self-defense and the decision today supports his position."

To hear how some members of the Seneca community reacted after seeing the dashcam video, click here.

What's next

The decision not to bring state charges against Tiller does not close the case. The U.S. Justice Department has opened a civil rights investigation into the matter and that federal investigation is still ongoing.